Their son’s now an Alicorn. But he charades as one to feel better about himself. Those wings are actual the result of crafts and a shitton of cosmetic magic.
Both are utter shitbags, and they’d undoubtedly be brought together by their mutual hatred of everything Ponyville-related. Blueblood was humiliated by a would-be golddigger only interested in his fortune, and Trixie lost everything over a misunderstanding. Blueblood helps Trixie back on her hooves, and in return she’s pretty much exactly what he’s looking for in a mare.
Romantic to look at from a distance, but I wouldn’t want to get close. Too dangerous/aggravating.
Soulmates, boom.